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Cisco CCENT/CCNA ICND1 100-101 Official Cert Guide by Wendell Odom

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Chapter 2. Fundamentals of Ethernet LANs

Most every enterprise computer network can be separated into two general types of technology: local-area networks (LAN) and wide-area networks (WAN). LANs typically connect nearby devices: devices in the same room, in the same building, or in a campus of buildings. In contrast, WANs connect devices that are typically relatively far apart. Together, LANs and WANs create a complete enterprise computer network, working together to do the job of a computer network: delivering data from one device to another.

While many types of LANs have existed over the years, today’s networks use two general types of LANs: Ethernet LANs and wireless LANs. Ethernet LANs happen to use cables for the links between nodes, and ...

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